Signal for mines



Npv. 2 6, 1929. M. NXKOLISH SIGNAL FOR MINES 2 Shets-Sheet Filed April. 1929 Nov. 26, 1929. M. NIKQLISH 4 S-IGNAL FOR MINES Filed April 1929 2 Sheets-Sheet 2 viz-"fil- U I l\ m my LA STATE E ATNT MIKE NIKOLISI-I, OF WILLIAMSON, IOWA.

SIGNAL FOR MINES Application filed April 1, 1929. Serial No. 351,664.

The present invention appertains to new used in determining the true perpendicular and useful improvements in signals and of the telescopic support in positioning the' more particularly to a novel signal for use in the pipe in the manner shown in Figure 2. mines. The principal object of this inven- Suitable bolts 14 support the housing 15 tion is to provide a signal of the character within which is mounted aconvent-ional clock 55 mentioned which can be set up in a mine to mechanism generally referred to by numeral warn nearby miners of the immediate danger 16 in Figure 5. The clock mechanism is of a collapsing ceiling. provided with a hammer or striker 17 which Another important object of the invention is adapted to strike against the housing 15,

is to provide a signal device for the use menin producing a warning sound. An arm 18 so tioned, which because of its portable nature is disposed through an opening 19 in the is capable of being readily carried about housing and has its inner end normally without any inconvenience. These and engaged with the usual escapement wheel of other very important objects of the inven the clock mechanism.

15 tion will become more apparent to the reader The outer end of the arm 18 is connected 65 after considering the invention as described to the lower end of the rod 20 which depends and claimed hereinafter. from the platform 9. A suitable key 21 is In the drawings: provided for engagement with the winding Figure 1 represents a vertical sectional stem 22 of the clock mechanism. 20 view through the novel device. In disposing this device in position, the to Figure 2 represents a side elevation of the same is contracted so that it may be easily structure in position for use. set up between the floor and ceiling of a Figure 3 is a bottom plan view of the platmine, after which the nut 16 is rotated so as form removed from the supporting structure. to feed the section 8 and platform 9 up- 25 Figure 4: is a horizontal sectional view, wardly so that the platform 9 will bear taken substantially on the line H of against the ceiling of the mine.

Figure 1. Obviously any loosening of the ceiling will F1gure 5 represents an enlarged fragmensuper-impose a load on the platform 9 which tary vertical sectional view. will cause the receding thereof and the con Referring to the drawings, wherein like sequent releasement of the escapement wheel so numerals designate like parts, the Figure 1 through the movement of the clock 20. clearly shows a telescopic support for the Thus the clock will be released and the signal means, which is generally -referred to striker 17 brought into operation. Miners by numeral 3. The telescopic support inare thereby permitted to escape before the cludes a base plate 4, and an upstanding ceiling actually collapses.

tubular section 5 thereon. A nut 6 is pro- Obviously numerous changes in the specific vided with a skirt 7 for dependency within shape, size and materials may be resorted the upper portion of the tubular section 5, to in the construction of this novel signal and for threadedly receiving an elongated device for mines, without departing from 40 post or upper section8of the telescopic supthe spirit and scope of the invention as 99 port. claimed hereinafter.

A platform 9 is provided centrally with Having thus described my invention, what a depending hollow boss 10 for receiving the is claimed as new is: upper end portion of the threaded post 8. 1. An alarm for mines comprising a pair A spring 11 is disposed within the hollow of telescopic sections for interposition be- 95 boss and impinges against the upper end of tween the floor and ceiling of a mine a platthe post 8. form supported by the upper section a sig- A level or in fact any character of geometnal supported by one of the sections, said rical instrument is secured to the tubular platform being movable by a superimposed Section 5 by a clamp 13 and is adapted to be load to operate said signal. 309 

